Очень нужно❤️
Correct the mistakes printed in bold. Explain your corrections.

1 We will be waiting here until he plugged in the laptop.

2 I forbid you to use the computer till you have been sixteen.

3 When Sophia comes back next month, it is three years since she

was away.

4 Scientists find it difficult to cure many illnesses until the level of

technology was improved.

5 She never uses her mobile when the battery had been low.

6 Last week, Sam requires a refund when he discovers that his

new digital camera is broken.

7 Until you bought me a cellular, I used a land-line phone.

8 Tomorrow Tom pay the connection fee when he go to work​

1 We will be waiting here until he plugs in the laptop.  (we use Present Simple in time clauses that refer to future time)

2 I forbid you to use the computer till you are sixteen.  (we use Present Simple in time clauses that refer to future time)

3 When Sophia comes back next month, it will be three years since she

was away.  (we use Future Simple in the main clause as it refers to future time)

4 Scientists find it difficult to cure many illnesses until the level of  

technology is improved.  (we use Present Simple in time clauses that refer to future time)

5 She never uses her mobile when the battery is low.  (we use Present Simple to describe a habit, a regular action)

6 Last week, Sam required a refund when he discovered that his new digital camera was broken.  (we use Past Simple to talk about things that happened in the past)

7 Until you bought me a cellular, I had used a land-line phone.  (we use Past Perfect for the action that took place first)

8 Tomorrow Tom will pay the connection fee when he goes to work​ . (we use Future Simple in the main clause because it refers to the future and Present Simple in the time clause)